title: Enzymatic formation of 5-fluorouracil from 1-(tetrahydro-2-furanyl)- 5-fluorouracil (tegafur) in human tumor tissues.
mesh_terms: D001711:Biotransformation; D005472:Fluorouracil / Q000031:analogs & derivatives* / Q000378:metabolism*; D006801:Humans; D066298:In Vitro Techniques; D008175:Lung Neoplasms / Q000378:metabolism*; D005641:Tegafur / Q000378:metabolism*
chemical_list: D005641:Tegafur; D005472:Fluorouracil